{
  "manageEntity": {
    "action": "Update",
    "entityId": "729344507",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravndtamgzynfyfavu4ddsgewhjhcwpfxb62ms5hripoxnzmjokcbq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":580550791}]}}}",
    "nonce": "0x95c1770441967f848fd55f08b4dd9967f96677f85bcfeb6d9b0f87d562c46fb8",
    "signature": "0xc2ef4f166119d7ab09aeb406c906879d9d29cc87cc698f442ec30f8ec45b76d50d177ce2362b4ee107bdba41a31b694cd221cbcc03071f4575d2e959c7acc49f1c",
    "signer": "0x02e15765C61eDed8E41cC3ECE6C97dEE0F691c98",
    "userId": "729344507"
  }
}